how we found whether net is enabled or not using "c" language

cnu_sree · 12-12-2006, 03:40 AM

how we found whether net is enabled or not without using ping.
beacuse if i ping my gateways it's working fine.if my system with private ip and if net is diconnected then also it is pinging.
so please tell me how we can find without using the ping using "c"
language

bulliver · 12-12-2006, 08:53 AM

There is no good way to do this other than trying to connect to a robust, well-known internet site such as google or yahoo!

You can check programmatically whether an interface is up, but that will still not tell you if you are connected to the internet or just a LAN, as you have found.

cnu_sree · 12-13-2006, 12:03 AM

i want to verify whether net is connected or not
1.deactivating the echo
2.removing the internet cable
3.net has to be disconnected at server
so these three cases i want to test.
in first two cases pinging our own gateway works.
but in 3rd it's fails
how we can verify in 3 cases